PHP

Read Delivery-Status Fields from a Bounce

Demonstrates the Chilkat Email.GetDeliveryStatusInfo method, which returns a named field from the message/delivery-status part of a delivery-status notification (DSN). It should be called only for an email identified as a delivery-status notification. This example loads a bounce message and reads its Action, Status, and Final-Recipient fields.

Background: When a message can't be delivered, the mail system returns a bounce as a multipart/report whose message/delivery-status part carries machine-readable fields: Action (e.g. failed), Status (a numeric code like 5.1.1 meaning "no such mailbox"), and Final-Recipient (the address that failed). Parsing these lets a program automatically detect hard bounces and prune bad addresses from a mailing list.

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<?php

use Chilkat2\Email;

// Demonstrates the GetDeliveryStatusInfo method, which returns a field from the
// message/delivery-status part of a delivery-status notification (DSN / bounce).
// Call it only for an email that is a delivery-status notification.

$email = new Email();

try {
    $email->LoadEml('qa_data/eml/dsn_bounce.eml');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Read individual fields from the message/delivery-status part.
echo 'Action: ', $email->GetDeliveryStatusInfo('Action'), "\n";
echo 'Status: ', $email->GetDeliveryStatusInfo('Status'), "\n";
echo 'Final-Recipient: ', $email->GetDeliveryStatusInfo('Final-Recipient'), "\n";

// Note: The path "qa_data/..." is a relative local filesystem path,
// relative to the current working directory of the running application.